CN102672393B - Assembly fixture for traveling wave tube cathode control assembly and assembly method thereof - Google Patents
Assembly fixture for traveling wave tube cathode control assembly and assembly method thereof Download PDFInfo
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- CN102672393B CN102672393B CN201210151305.3A CN201210151305A CN102672393B CN 102672393 B CN102672393 B CN 102672393B CN 201210151305 A CN201210151305 A CN 201210151305A CN 102672393 B CN102672393 B CN 102672393B
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Abstract
The invention discloses an assembly fixture for a cathode control assembly of a traveling wave tube and an assembly method thereof, 1) a cathode (3) is placed in a groove (5) of a base (2), and the upper end of the cathode (3) is compressed by a pair of tweezers; 2) placing the control electrode (4) on a second step (22) of the base (2), and screwing the pressing block (1) to fix the control electrode (4) on the base (2); 3) and welding the cathode (3) and the control electrode (4) by adopting spot welding, namely finishing the assembly of the control assembly. The assembly fixture for the cathode control assembly of the traveling wave tube is used in an X-wave band 100W traveling wave tube, the height precision can be guaranteed within 0.008mm, and the concentricity can be guaranteed within 0.01 mm; the assembling clamp can be applied to assembling of the internal cathode control assembly of the anode control electron gun in the traveling wave tube, and the assembling concentricity precision can be controlled within 0.02 mm.
Description
Technical field
The present invention relates to the electron gun parts inner cathode of travelling-wave tubes, the manufacture field of control utmost point assembly, especially relate to a kind of assembling jig and assembly method thereof for the moon control assembly.
Background technology
Travelling-wave tubes, as a kind of microwave power amplifier, is widely used in national defence and the national economy fields such as radar, communication, electronic countermeasure.Electron gun is as producing the assembly of electron beam, for the slow wave system of travelling-wave tubes provides the electron beam of certain electric current, shape and range, can meet the demand of radio-frequency field, is " heart " of travelling-wave tubes.Electron gun generally comprise electron emission cathode assembly, accelerate the anode assemblies of electronics and maintain the control utmost point assembly of electron beam definite shape.The electron beam that electron gun produces is to have very little area and carry very high energy, and shape and the status requirement of target, anode and the control utmost point are high.The shape of electrode is determined by processing parts, can reach very high precision.The mutual position of electrode is determined by assembly method, ensures mutual concentricity and height.In cathode assembly, be hot operation, the precision of mounted inside at high temperature also can change, and causes electron beam to change.
Between existing negative electrode and the control utmost point, fixed form adopts spot welding, taking mode of grooving to be fixed on one of them heat shielding of negative electrode controls on utmost point side, wherein the groove number of heat shielding is even number, negative electrode and control utmost point position are fixed in spot welding, complete after welding this two interelectrode concentricity and highly all will keep high accuracy.In the time of spot welding, because position degree precision prescribed is high, be generally all controlled at 0.01mm with interior, but conventional operation is difficult to ensure assembly precision.Therefore, be badly in need of a kind of fixture and first fix negative electrode and control the utmost point, to ensure mutual position degree.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of assembling jig and assembly method thereof for the cloudy control of travelling-wave tubes assembly for problems of the prior art, its objective is while ensureing the cloudy control of assembling assembly, negative electrode and control extremely all can be fixed, by concentricity be highly controlled in certain accuracy rating, thereby ensure the concentricity of cloudy control assembly in assembling process and the precision of height.
Technical scheme of the present invention is that this kind comprises briquetting and base for the assembling jig of the cloudy control of travelling-wave tubes assembly, and described briquetting is nut type, and inner chamber is T font, top inner surface is planar structure, it is large that top outer surface becomes from inside to outside successively, is cone structure, and the internal diameter of briquetting is provided with screw thread; Described base is stepped, totally five layers, every one deck is cylindric, top layer step is ground floor, diameter minimum, diameter increases gradually downwards successively, and top layer step is provided with the groove for assembling negative electrode, the external diameter of the second layer step of top layer step bottom is measure-alike with the endoporus of controlling utmost point entrance, and second layer step is identical apart from the distance between distance and negative electrode and the control utmost point of groove floor with the intersection of the 3rd layer of step; The outer surface of the 4th layer of step of described base is provided with the helicitic texture matching with the screw thread on briquetting.
The diameter of described groove is identical with the diameter of negative electrode to be assembled.
Concentricity between the external diameter of the external diameter of described groove and second layer step is in 0.01mm.
Utilize above-mentioned method of assembling for the assembling jig of the cloudy control of travelling-wave tubes assembly to comprise:
1) negative electrode is placed in the groove of base, the upper end of negative electrode compresses with tweezers;
2) be placed on the second layer step of base controlling the utmost point, and screw briquetting the control utmost point is fixed on base;
3) adopt spot welding target and control the utmost point and weld, completing the assembling of Control Component.
This kind with said structure has the following advantages for assembling jig and the assembly method thereof of the cloudy control of travelling-wave tubes assembly:
1. this kind determined apart from the distance of groove floor by the intersection of second layer step and the 3rd layer of step for the assembling jig negative electrode of the cloudy control of travelling-wave tubes assembly and the height of the control utmost point, and this size is revised by machining, has certain precision; The concentricity of negative electrode and the control utmost point is determined by the concentricity between the external diameter of groove and the external diameter of second layer step, thus the concentricity of dependence fixture itself and height, concentricity and height between the moon control assembly interior control utmost point and the negative electrode that ensures to assemble.
2. this kind is for the assembling jig of the cloudy control of travelling-wave tubes assembly at X-band 100W travelling-wave tubes, and height-precision can ensure that, in 0.008mm, concentricity can ensure in 0.01mm; This assembling jig can be applied to the assembling of the inner cloudy control assembly of travelling-wave tubes middle-jiao yang, function of the spleen and stomach control electron gun, and assembling concentricity precision can be controlled in 0.02mm.
Brief description of the drawings
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of base in the present invention.
Fig. 3 is the local structure for amplifying schematic diagram of base.
Fig. 4 is the structural representation of cloudy control assembly.
Fig. 5 is assembling jig of the present invention and the cloudy assembling schematic diagram of controlling assembly.
In Fig. 1-5,1: briquetting; 2: base; 21: top layer step; 22: second layer step; 23: the three layers of steps; 24: the four layers of steps; 3: negative electrode; 4: control the utmost point; 5: groove.
Detailed description of the invention
Comprise briquetting 1 and base 2 in conjunction with, this kind for the assembling jig of the cloudy control of travelling-wave tubes assembly from structure shown in Fig. 1-3, briquetting 1 is nut type, inner chamber is T font, and top inner surface is planar structure, and it is large that top outer surface becomes from inside to outside successively, for cone structure, the internal diameter of briquetting 1 is provided with screw thread; Base 2 is stepped, totally five layers, every one deck is cylindric, top layer step 21 is ground floor, diameter minimum, diameter increases gradually downwards successively, and top layer step 21 is provided with the groove 5 for assembling negative electrode 3, the external diameter of the second layer step 22 of top layer step 21 bottoms is measure-alike with the endoporus of controlling the utmost point 4 entrances, and second layer step 22 is identical apart from the distance between distance and negative electrode 3 and the control utmost point 4 of groove 5 bottom surfaces with the intersection of the 3rd layer of step 23; The outer surface of the 4th layer of step 24 of base 2 is provided with the helicitic texture matching with the screw thread on briquetting 1.
The diameter of groove 5 is identical with the diameter of negative electrode to be assembled 3; And the concentricity between the external diameter of the external diameter of groove 5 and second layer step 22 is in 0.01mm.
Utilize above-mentioned method of assembling for the assembling jig of the cloudy control of travelling-wave tubes assembly to comprise:
1) negative electrode 3 is placed in the groove 5 of base 3, the upper end of negative electrode 3 compresses with tweezers;
2) be placed on the second layer step 22 of base 2 controlling the utmost point 4, and screw briquetting 1 the control utmost point 4 is fixed on base 2;
3) adopt spot welding target 3 and control the utmost point 4 and weld, completing the assembling of Control Component.
Formed by base 2 and briquetting 1 with cloudy control component assembling fixture in conjunction with, travelling-wave tubes from structure shown in Fig. 1-5.Base 2 has multiple steps, and wherein a stepped outer surface has screw-rod structure, has a groove 5 in top layer step, and the external diameter of groove 5 is identical with the diameter of the negative electrode 3 that need assemble, and groove 5 is used for fixing negative electrode 3.The external diameter of top layer step 21 is slightly less than the interior hole dimension of controlling the utmost point 4 tail ends, controlling the utmost point 4 can put into, the external diameter of second layer step 22 is identical with the control utmost point 4 entrance endoporus, can be used for being mounted with the control utmost point 4, the concentricity precision of the external diameter of second layer step 22 and groove 5 external diameters is very high, is ensured by machining.Second layer step 22 is identical apart from the distance between distance and negative electrode 3 and the control utmost point 4 of groove 5 bottom surfaces with the intersection of the 3rd layer of step 23, ensures precision by machining.Briquetting 1 is nut type, and top inner surface is planar structure, can compress and control the utmost point 4 when use, and the control utmost point 4 is fixed on base 2.Wherein the screw rod of nut size and base 2 coupling, is tightened on when use on base 2.In the time of the cloudy control of assembling assembly, negative electrode 3 is placed in base groove 5, negative electrode 3 upper ends take tweezers to compress, and control the utmost point 4 and are placed on the second layer step 22 of base 2, and briquetting 1 is tightened and controls the utmost point 4 on base 2.Then adopt spot welding to weld controlling the utmost point 4 and negative electrode 3, complete the assembling of cloudy control assembly.Main concentricity and the height that relies on fixture itself, controls concentricity and height between the utmost point and negative electrode in the moon control assembly that ensures to assemble.
Concrete implementation step is as follows:
Processing base, as shown in Figure 2, is made up of 5 layers of step, and step is cylindric, and wherein the 4th layer of bottom surface step 24 outer surface are screw-rod structure.Base 2 top layer steps 21 have a groove 5, and as shown in Figure 3, the external diameter of groove 5 is identical with the diameter of the negative electrode 3 that need assemble, and the external diameter of top layer step 21 is slightly less than the interior hole dimension of controlling the utmost point 4 tail ends, and groove 5 outer end wall thickness are about 0.05mm like this.The external diameter of second layer step 22 is identical with the control utmost point 4 entrance endoporus, and the external diameter of second layer step 22 and groove 5 internal diameter concentricity required precisions are high.Second layer step 22 is identical apart from the distance between distance and negative electrode 3 and the control utmost point 4 of groove 5 bottom surfaces with the intersection of the 3rd layer of step 23, and required precision is high.
Processing briquetting, as shown in Fig. 11, nut type, internal diameter has escape processing to top end, and top inner surface is planar structure, and it is large that top outer surface becomes from inside to outside successively, is cone structure.The wherein screw rod of nut size and base 2 coupling.
Adopt the cloudy control of Fixture assembly assembly, cloudy control component drawings as shown in Figure 4, heat shielding of negative electrode 3 and the sidewall welding of focusing electrode, focusing electrode endoporus has two sizes, between negative electrode 3 external diameters and focusing electrode endoporus, has a gap.
In the time of the cloudy control of assembling assembly, as shown in Figure 5, negative electrode 3 is placed in base groove 5, negative electrode 3 upper ends take tweezers to compress, and control the utmost point 4 and are placed on base 2 second layer steps 22, and briquetting 1 is tightened and controls the utmost point 4 on base 2.Then adopt spot welding to weld controlling the utmost point 4 and negative electrode 3, complete the assembling of cloudy control assembly.
This kind is for the cloudy assembling jig of controlling assembly of travelling-wave tubes at X-band 100W travelling-wave tubes, and height-precision can ensure that, in 0.008mm, concentricity can ensure in 0.01mm; This assembling jig can be applied to the assembling of the inner cloudy control assembly of travelling-wave tubes middle-jiao yang, function of the spleen and stomach control electron gun, and assembling concentricity precision can be controlled in 0.02mm.
Claims (2)
1. the assembling jig for the cloudy control of travelling-wave tubes assembly, it is characterized in that: described assembling jig comprises briquetting (1) and base (2), described briquetting (1) is nut type, inner chamber is T font, top inner surface is planar structure, it is large that top outer surface becomes from inside to outside successively, is cone structure, and the internal diameter of briquetting (1) is provided with screw thread, described base (2) is stepped, totally five layers, every one deck is cylindric, top layer step (21) is ground floor, diameter minimum, diameter increases gradually downwards successively, and top layer step (21) is provided with the groove (5) for assembling negative electrode (3), the external diameter of the second layer step (22) of top layer step (21) bottom is measure-alike with the endoporus of controlling the utmost point (4) entrance, second layer step (22) is identical apart from the distance between distance and negative electrode (3) and the control utmost point (4) of groove (5) bottom surface with the intersection of the 3rd layer of step (23), the outer surface of the 4th layer of step (24) of described base (2) is provided with the helicitic texture matching with the screw thread on briquetting (1), the diameter of described groove (5) is identical with the diameter of negative electrode (3) to be assembled, and the concentricity between the external diameter of described groove (5) and the external diameter of second layer step (22) is in 0.01mm.
2. the method for utilizing the assembling jig for the cloudy control of travelling-wave tubes assembly described in claim 1 to assemble, is characterized in that: described assembly method comprises,
1) negative electrode (3) is placed in the groove (5) of base (2), the upper end of negative electrode (3) compresses with tweezers;
2) controlling the utmost point (4), to be placed on the second layer step (22) of base (2) upper, and screw briquetting (1) and will control the utmost point (4) and be fixed on base (2);
3) adopt spot welding target (3) and control the utmost point (4) and weld, completing the assembling of Control Component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210151305.3A CN102672393B (en) | 2012-05-16 | 2012-05-16 | Assembly fixture for traveling wave tube cathode control assembly and assembly method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210151305.3A CN102672393B (en) | 2012-05-16 | 2012-05-16 | Assembly fixture for traveling wave tube cathode control assembly and assembly method thereof |
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| CN102672393A CN102672393A (en) | 2012-09-19 |
| CN102672393B true CN102672393B (en) | 2014-08-27 |
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| CN108788465B (en) * | 2018-07-10 | 2020-05-05 | 安徽华夏显示技术股份有限公司 | Ultraviolet tube electrode welding device and welding method thereof |
| CN109637920B (en) * | 2018-12-20 | 2020-11-06 | 安徽华东光电技术研究所有限公司 | Preparation method of ion neutralizer electron source |
Citations (4)
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|---|---|---|---|---|
| EP1220277A2 (en) * | 2000-12-22 | 2002-07-03 | Sony Corporation | Adjusting method for cathode position of an electron gun and an electron gun for a ray tube |
| CN201618940U (en) * | 2009-12-09 | 2010-11-03 | 安徽华东光电技术研究所 | Laser welding fixture of electron gun component |
| CN201824085U (en) * | 2010-09-19 | 2011-05-11 | 奇瑞汽车股份有限公司 | Diameter-adjustable positioning pin |
| CN202894636U (en) * | 2012-05-16 | 2013-04-24 | 安徽华东光电技术研究所 | Assembling fixture for traveling-wave tube negative-electrode control assembly |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002042683A (en) * | 2000-07-24 | 2002-02-08 | Sony Corp | Electron gun, method of manufacturing the same, and cathode-ray tube |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1220277A2 (en) * | 2000-12-22 | 2002-07-03 | Sony Corporation | Adjusting method for cathode position of an electron gun and an electron gun for a ray tube |
| CN201618940U (en) * | 2009-12-09 | 2010-11-03 | 安徽华东光电技术研究所 | Laser welding fixture of electron gun component |
| CN201824085U (en) * | 2010-09-19 | 2011-05-11 | 奇瑞汽车股份有限公司 | Diameter-adjustable positioning pin |
| CN202894636U (en) * | 2012-05-16 | 2013-04-24 | 安徽华东光电技术研究所 | Assembling fixture for traveling-wave tube negative-electrode control assembly |
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Address after: 241000 No.01 Eshan Road, high tech Development Zone, Yijiang District, Wuhu City, Anhui Province Patentee after: ANHUI HUADONG PHOTOELECTRIC TECHNOLOGY INSTITUTE Co.,Ltd. Address before: 241000 Anhui Province, Wuhu city Yijiang District South high tech Development Zone Technology Park mansion Patentee before: Anhui Huadong Polytechnic Institute |